Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d953f4ad4ac8146d8b9950bcd849560655a73b114e5166e489b64e42a486d67' 
  AND token = '8Rfx2oy8E7wUJLVmRN5ncP2eI2ZDmL+VoW330LrMyRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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