Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3de00f5acc4c4bfe0fbd1a0fe996df6131510a120175ff701eae0e4b11e1452d' 
  AND token = 'Oejbo958hyQCR3AD1z4NUqqD4Qbwr13FndZtbpEoGvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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