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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '130d64ca05da962baf926ea752179a704c82700643c7799f95f4902689e2582f' 
  AND token = '7daMDDiba/slpFtUva0icIw3REZ4cfakHXy2kwq/NmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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