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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fdb6427247c2e6f110b7e7134ccda6d8fa14a9795eb7ac602388ec47846acd1b' 
  AND token = 'HZUiYpF08t4HX9og/aMqaVXhaVgJhSJgjsid88orPHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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