Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37ef399a20a92188ed97f06ce116f01a1c614b4a3eef827d664036e072d91741' 
  AND token = '8H108W3CTm5GsOHB9GZMOSVYCr5+2/5dUJ9jm6vIk5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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