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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '027bb3bdd067702ca67137f3171b1d105525b66870aeb635f556a3a3591d1028' 
  AND token = 'LpViDy/Nso8iI5YCbG47Wm0JfWMjyMycvIxnjajAI+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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