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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6267e70580c82c2e435aa835b93168372f1ae02ec193bc90916260587c062cf8' 
  AND token = '7sByfgO4kBnk+3nnqEJ3JQeKCFvHoEBLCe8TBdFAwpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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