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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07865cdcaadb910c58f54d7e796e1e3875ced8262147e5b0f4ec95739989fa67' 
  AND token = 'WV2VW4vXtla6ryYwoMZgMkEId03bcOfKvttGPQn827M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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