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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44e519ff0caf16fab24a98a126dfec8eca107ccd5f367ac9e090075756f3b2d7' 
  AND token = 'qAWC8/bnD6ftPj/qMz5IcaG5gzW3FG2EHgaV+n8XRq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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