Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ead90fb2a295e338f7b2bbba56628b9371b9de661590e06cccff7cb8bff95a84' 
  AND token = 'KdO81qfJi43OwyPafu+8b99b+2exhXHI1Oc0MNrOULU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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