Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c962bde8d2acd0e8a568fdeb7954da4be64225a1e4c4690f885b759f77fbb656' 
  AND token = '7PAOT4eCsV+5v00K32Hjw2E8tnzdGm7xH/eU09d9+cM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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