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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a5707ab561a849ee009f72b31279578aa86cfcc232ce44fe780442983addd5b7' 
  AND token = 'IOugQIKh+pAz16jDkU4FZ9j9NUg54Qr4yNGUMR+faQI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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