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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1d6e0188aefe2dfae0a8adcfd10a4deb4c8f092ef191aeec368a9f86937be6e' 
  AND token = 'KxX5fM6O9EJbE44zsyHraTUX409hEKQQogwsQ/HlRDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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