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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7723251535607c6eba66089dc2b7c70dc34610e1a3672e1a6c943d795078cc2a' 
  AND token = 'jJ3GVWxkjjkHSx/boOblY7a9BJ4ACEvdC9zEZh1o9h0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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