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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e92980e780ecff21c22e3b5b30c3a98178e54f86afe3ee05b20e3903c318c309' 
  AND token = 'N3bmux/EfKrzcRVH6R5D5SlyuV7SGuUjdei8p+k2edo=' 
  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"
    }
  }
}