Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7c2eaba9f2db2b7cf31166a44fccdf5de5a68269c42c41d1a913c9441af639c6' 
  AND token = 'sEiptyzVMOtaDRytW5uFw8UqGSGLlO/SE1+n5JxNL94=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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