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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b034712314dc2e40aaae5b84cb8ce097b7216cb676ebb482215279829b3e9a3' 
  AND token = 'qFetN0HGassH+bLc6fR9aiXoaCUsQCZxMn5mSc72yw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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