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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a07d173aa7fae7590566450f4f682b2296ec49b54fea12f8c7dcfecc911fccf6' 
  AND token = 'fxANRgkJyPwgP5X3j47J0A6Y6rKtrCR/eWSXNnARN0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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