SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86217a9fd53dcd9878527648fc6d4743d94506ff1fa7c277ad00448f8e87b658' 
  AND token = '8rODTi/XSZRBNz+a5GMsv9u2Do7iX4XFAYIKtzS+JVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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