SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c648caea5133dddd2a6079bdec1e65df3c9747f3087c42ca3f99687ed473675' 
  AND token = 'qOV/Q9JNrHv+yhEfJh03eV3j/xpATaBMoTAZG+n7tLw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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