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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1e93400c4f383af4fb7e512106eaf30aea3e0a72947f4ae60a9193d15d602b0' 
  AND token = 'tQKXD1ZbnYcmEHHaMOdB+mDsSCmAIp4w9Mb56LXPDGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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