Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70211df53e399910a88cc4ced29bc4e5dee77226cd24b78847063994e6a0ff56' 
  AND token = 'z05/Yrxs9iSjn5QsRck0l8eFoaTLDPYT7yrHdkOrEfY=' 
  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"
    }
  }
}