Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0708135971d5edb3c93fabe96c74288c9efbad24c507fe64acc5a264519590d0' 
  AND token = 'DODy8KGpVepVoovj7dq6/JYmEKyWa+DfX2k0QR2qkIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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