Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd72a44db93b023c18b708e1734e62e3192f701879f9213dd6277e030aeb3f096' 
  AND token = 'vhEYfTPn7QtN6nrZWo9YLoFRPUPpOo7tRfxJ/u4Oy8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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