Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7bc5eea87c68472ed87d667769a68c4791502c5236c007e344dc1136078a0183' 
  AND token = 'OIqnX+pgz0puJa+tyNGwkXGOv/SaqR/r5AEbQ2S+Dbk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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