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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '01fc052c44ffe28d1c4f15821b9f32d4e8f687e294821f400cf2fdd101eca977' 
  AND token = '9xi8PK6se/NT0H+Sc1jj2JdY2kGMlYM8rK/umvnaz6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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