Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e2a0a05a68dae3deb26ebec1bf21725a7d6532a223cbb985d72aaeeeef767527' 
  AND token = 'g3wl3aUHZMTwkTUWosYuJd3O2/j1hfiIrpCwW+VeOyg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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