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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ebd60fda18a9feba3f1f0a8ba973d0ce01edb758ece955fc0cf44304a7f1f80f' 
  AND token = 'whvVesqvAIrVH/NVnnqHq+R8C1vo55RB81a8FkAw4NU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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