Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7852d27d57c850584be07e1546c6499499bf399848112a72365182c3c69d541' 
  AND token = 'BAXmCLRmtBzGbYRZU4XSjDqYKk8S82lFedEP2I1ADsY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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