Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cbadfbeb36227e3e97ae8192b0e3a1b0ff7c6221a05d805ffe548159d69d5683' 
  AND token = 'p1UHw9WNy/R23LPNEs47QTUGQULWKSNwpEqaF0htKuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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