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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f60ecd4c5f13432369592a728e1501e1400d5fbcc50371e9978a38e211fbebd9' 
  AND token = 'SOlWOn14VFvql9eRx5Ti5s8DtHT7Dicrt0/xXolNhmU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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