Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45b7da8307e98c13bdabc4cb5b4f27f3417b7643883dbcbe7ea8bcad078c8575' 
  AND token = '0L7KcBiRpvLdTyWeLKY9Wr4bxH+29qOaA+zneCY6lcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}