Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa1af17621b93536599c8dc0db2652f9177710a037889e7482df05b2a11de398' 
  AND token = 'F9Tus2eeJB+jLgZAkH7DfZ7i6hmlXSy2CVXy9kMBeoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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