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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2264e9802cd181c50ae616ce7df77794fa13d6c4d6a2f65709bfd4d49dfaa057' 
  AND token = 'o9pW0Q2Vm8iuXyij0hIIwEX1OZNeauZEzl1/6OYkO+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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