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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02111d96a4e2054fd97f84d199f736f39b9b2c8be608d4b7b808fca04ba3f6a8' 
  AND token = 'h54XoMMStZ43vCIbaQCVM8nCVHnWMlhrGmbtFnhqnac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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