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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04bd41a3285661078d76c06365d5aa1165b9c5e960615672bec3e4e7ab85170f' 
  AND token = 'pdNkpJ+Xcgzevzn/rhDf9f/LbvBCe72I/NMR2jdosPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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