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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '314273e90ff668ec0b7ba6db722ca02a2bc11ea794c43a044713c3b33b35af7e' 
  AND token = 'Ik98x7oaelOAIO33XWqZFiUWQ0Iw5VOCAGPepQGLv3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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