SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '010f40bb4fa00f77411d00df6662a145a2351cac30f6a702e97b1b37df345afc' 
  AND token = 'EBS0EGqed1gaDv/O8IiAYQeBCIYgEmMKLJDQKR70jRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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