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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e66b30a0890dc1735485655e0093f08c5c0998c6fc5b71a1fbc44602d5dda7b3' 
  AND token = 'yO1j7io7LLTP4DxaLeeOeJ0TV+YltZovJsy/tSJw94M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}