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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '79fd7fbc2f6b73f054e394bb0fa67fa682fb18c3492779c732242f67a6cf09e7' 
  AND token = 'y/lrTM8K1Hny7NpzghHAUWqMVyHrfGsu8EKIIA/FF9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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