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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60bd1a7ab15248de72ce21acbb0e4ca1250264a85cd36aa9a95b27a125b2df5f' 
  AND token = '06/HiX3TmEKnqQuRQlzPMSZaUwINz5ab5ERWxwlA78k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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