Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0142b688761618ca2280839d2104c29a8f4a70157ac77aa65d09619032a7a5cf' 
  AND token = 'AZBPjyVWOC1GphTO26eyc01Ey31GNxoQ/mXYl8V0W4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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