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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba0ed0601b01331caa4a8e5e47657541d70fa7e531bd2f3278a30f0a0a1603ca' 
  AND token = 'QrYz93q0H/ab8E/jxKO55t8j+w+mvcppD1PCCN9T6ns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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