Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0046dbd892ba38e3e06a6dc361388072151746b0abac3f7087a2f9d6ea802eca' 
  AND token = 'I/YA3Fe/Y+cClfso2roj35G1QgXVauWPA7yf3lZQVjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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