SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b3776bf097cc60e4a5266b0fda4c094aa86c3643933fc38d94dd56426fb143a5' 
  AND token = 'pZnYwkq/qc8qhvwAViVR9bdvmc5JQNOkIpyxuBjuJEY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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