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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f9cd6453a1ef3487ad4fa56a4e89d86856e7b657868166c2617c7e7ab5896f0' 
  AND token = 'tQ8DJzM0U/5hDcUoVNUUQm1c8foT3i1Xdeqn0XPSMAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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