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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c874d9dff2d109e861a2621c4d24485f5a42e5d157e8ce21d209c15ec67ed7d5' 
  AND token = 'N7EVUyo+Ri8wluFGpIbD7sxv1xK80IKr0pItL8Iw+h8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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