Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '484673171101ab3c5e72e15eadbcb8a50d44081679dc1db9ce930627f0b5055b' 
  AND token = 'ftjWwPM8uXAMlvcUDEE+P3tP6a5NVu2Tw1lbDthkhLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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