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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '233ac6c2159da448c3e0f9cb73dbab8e6209a0e1831d89f19a571514a4481102' 
  AND token = 'XSCZDNWX7Y0LHgjHEIdfiep/j4nZa1r0JBNB63lB2B0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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