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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '107947817c2027b4792263bc32d75a72018a54c961b3c12261f7b1695a54f697' 
  AND token = 'ESUnhIbK0uicwoDAKY/EWNnUR8LaCzoy2iFEQf7Pla0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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