SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0113fbc22d3757d3cd553b67f00a45e70dc167ae817e30abb37dba6d88853905' 
  AND token = 'BIOfZfHoDgw26G5JRije4tgItDSdKwvbRCUuoBVBMPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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