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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edeeb11fec9dfc26950f2f7f4b2dfac278db101915690fb30306a8f8ca55f88f' 
  AND token = '7bkkC5bgABFacHorfMVdykQMqWBF6Qece8jz6LfZn9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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