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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae070522487e0fda1d059a8bc66c45bc9f67273bc5c5d99b84cf11040bf2696f' 
  AND token = 'iO0HEP7YPkk593jxlVALMPuOOTwmoDmX7NpdB67iGvI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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