Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02a317cdf8766de215622db0be8b5767f9e6557ef46cb9d9d6fc4b87fe0de6aa' 
  AND token = 'YJpQQkoQE1dH5FOOdKalepuMLugVza0kGFBSkZdmP2c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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