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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '622c678281a397e2fc2a1c52240d483e65bcd9ce2a5a91605d7c2038cfbf20c8' 
  AND token = 'FuoBZx9RgOb16/pluOIaX8ZvQRqqmP2t6ynQhAWXOcc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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