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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '24076819c2da272913d7e654ef3ecf4747b9dad7e863aed03cf46f8d78da70ef' 
  AND token = 'dr9ywmym3rs8ADcmz5mWOBnyWs7sWNpyCkbvNrkzr2o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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