Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89894928d1f60f2934de91ba587a0e420b871ce524104270a30881a34a326628' 
  AND token = 'yQuaI1Uq86ym/E79kxyxk3YcTRHH2peWJ3ukxbP1j8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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