Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4981280465ef234f41d9b8338d99a1e52d47aca445ff15f7540c75d5404e2495' 
  AND token = 'G4vxNL9R5SlZqy6q/zw5rSjH5Y3wypT1rISik2VUJTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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