Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a07787be865e699609e400944a0414a52b78632b36d432e036742b8e361a62c' 
  AND token = 'tUWxim6e2F7EGq1qt0fQnbQ0zoqsud9iqfiXuF2cEMY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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