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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '443ab99fb8af44dd3574b6eaf76aea4d69d9044d153a0a9e3fc029e6b85aef41' 
  AND token = 'enWKF9S2TXKbaeBBm+I6Y9t8VPuGNSc6JKRIWNMmnBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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