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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0d95bb1ebdc3fe3f9c74b2e2b198c4ad2852d3e877f3f1cbd0a082c7c38a49cd' 
  AND token = 'X/z8Hlcm8AaepPBlpiRo8Cilm4lEKkFqf5lZJSO6GcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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