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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c896c44e2654be9156ac601e2d2a0ee9dd73b37e9f51ea2fed9eaa361aaf3a66' 
  AND token = 'lHupYRrxtrQYZ1ZZ90EmT5UG7vl9NTXFU8rI9cCIq+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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